ProportionalDirectionalValves - Bucher Hydraulics...100-P-000172-E-02/08.2016 LVS08/12directionalvalves–preferredproductsprogramme 6/66 1.5 Generaltechnicaldata Generalcharacteristics

1/52

Reference: 100-P-000172-E-03

Issue: 08.2020

Proportional Directional ValvesSeries LVS08 and LVS12 – Preference program

100-P-000172-E-03/08.2020

LVS08/12 directional valves – Preference program2/52

100-P-000172-E-03/08.2020


Contents Page

1 General description 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.1 Advantages 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.2 Application examples 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.3 Pump systems 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.4 General technical data 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2 Inlet sections 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .


2.2 Characteristic curves 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.3 Functions 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.4 Overview inlet sections 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.5 Dimensions 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3 Intermediate sections 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .


3.2 Overview of items, with part number 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3 Overview of intermediate sections 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.4 Dimensions 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4 Directional valve sections 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .


4.2 Technical data for pressure relief / make-up valve 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .


4.4 Functions 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5 Directional sections LVS08 – with ON/OFF or proportional solenoids 21. . . . . . . . . . . . . . . . . . . . . . .


5.2 Characteristic curve 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.3 LVS08 Standard 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.4 LVS08 Standard with pressure relief / make-up valve 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.5 LVS08 Standard, surface for bolt-on valve 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.6 LVS Standard, surface for bolt-on valves, with pressure relief / make up valve 28. . . . . . . . .

5.7 LVS08 with integrated double seat valve 30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.8 LVS08 with additional manual handlever 32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.9 LVS08 with additional manual handlever and pressure relief / make-up valve 34. . . . . . . . . .

6 Bolt-on sections LVS08 36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6.1 Function 36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .


6.3 Overview bolt-on sections 36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6.4 Dimensions 38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

100-P-000172-E-03/08.2020


7 Directional valve sections LVS12 – electrohydraulic, two-stage 39. . . . . . . . . . . . . . . . . . . . . . . . . . . .


7.2 Characteristic curve 40. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7.3 LVS12 Standard 41. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7.4 LVS12 with pressure relief /make-up valves 43. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7.5 LVS12 with additional manual handlever 45. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7.6 LVS12 with additional manual operation, pressure relief / make-up valve 47. . . . . . . . . . . . . .

8 End sections 49. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .


8.2 Overview of end sections 49. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8.3 Dimensions 49. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9 Configuration of control blocks 50. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9.1 Ordering example 50. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9.2 Assembly kit 50. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10 Fluid 51. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

11 Liability 51. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

12 Note 51. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

100-P-000172-E-03/08.2020


1 General description

Manufacturers of machinery and equipment depend on fast

response times and the reliable supply of machine compon

ents. By using the preference programme shown in this

publication, you benefit from the straightforward ordering

and on-time delivery of the fast-moving products from the

LVS proportional directional valve modules.

1

2

3

6

4

5

7

8

Item Description

1 Inlet section

2 Direct acting, solenoid-operated directionalvalve, on/off or proportional solenoid

3 Bolt-on section

4 Intermediate section

5 2-stage, proportional, electrohydraulically operated directional valve

6 2-stage, proportional, electrohydraulically operated directional valve with additional manualhandlever

7 End section

8 Threaded tie rods

1.1 Advantages

� Short and reliable lead times (we maintain an inventory of

preferred products)

� Reduced customer inventories

� Rapid reaction time to changes in customer- and market-

requirements

� Adaptable valve-block configuration

1.2 Application examples

� Agricultural equipment

� Forestry machines

� Construction equipment

� Transportation and materials handling

� Municipal vehicles and equipment

1.3 Pump systems

1.3.1 System with fixed-displacement pump

The valve block includes a 3-way pressure compensator,

directional sections and block termination components. In

the neutral position, the 3-way pressure compensator is un

loaded to tank and the entire flow being supplied to the valve

passes through the 3-way compensator to tank with minimal off-load pressure drop.

When a directional section is operated, the actuator pres

sure is signalled to the 3-way pressure compensator. The

3-way compensator maintains the Δp at a constant level. So

the flow rate is independent of the load and proportional to

the open flow area of the metering orifice in the directionalvalve.

100-P-000172-E-03/08.2020


1.3.2 System with variable-displacement pump

In systems with a variable-displacement pump (load-sens

ing system), as well as the normal P line, the control line is

also connected to the pump control. When all directionalvalves are in the neutral position, the control line is con

nected to tank and the pump de-strokes. When a directional

section is operated, the actuator pressure is signalled to the

pump control and the pump goes on-stroke until the defined

control Δp is reached.

1.3.3 Post-compensated system

(proportional flow-sharing principle)

When a valve system that is designed on the proportional

flow-sharing principle is receiving sufficient pump flow andhas adequately-sized inlet lines, it operates functionally just

like a system with upstream compensators. But two funda

mentally different characteristics distinguish a system with

a proportional flow-sharing circuit:

The pressure drop across the spool metering orifice is controlled not by the individual compensator, but by the most

highly loaded actuator via the system pressure control

(pump controller with load-sensing systems, or system

pressure compensator with fixed-displacement pump sup

ply).

On the individual compensators of the other actuators, the

highest system load is reproduced behind the spool meter

ing orifice and thus the system pressure control also applies

to these actuators, and the pressure compensators coun

teract the effects of the different load pressures on each

section.

When a system with upstream compensators demandsmore total flow than the pump can supply, the system only

reduces the flow to the actuator with the highest load (until

it stops).

In a post-compensated system, with LS pump supply wi

thout inlet compensator, the available LSΔp is used to generate the flow. In contrast to upstream compensators, this

can alter the flow rate to all the actuator ports.

In this case, the LSΔp for the pump is split into the Δp loss

in the supply line from the pump to the valve block and the

effective Δp at the control spool.

It is important to note that, as the flow rate increases, the Δp

split ratio changes.

After the post-compensated systems that jointly are supplied by one pump, it always have to be the highest load

pressure in the system that is signalled i.e. sensed.

Also in the case of several valve blocks, it is always the high

est actuator load pressure in the system after all post-com

pensated systems that must be signalled i.e. sensed.

By using an inlet compensator, a constant Δp is maintained,

as long as the pump can supply the flow that is required. If

the actuator flow demanded is higher than the maximum

pump delivery, the compensator Δp is no longer reached

and the compensator opens completely. The Δp now setsitself automatically, at a level below the compensator Δp.

1.3.4 Example showing a downstream pressure compensator

The compensator with thehighest load pressuregoes into the signalling/sensing position.

LS unloading

200 bar at allcompensators

Pipework lossesEx. 5 bar

Metering orifice

System pressurecontroller

LS*max. = LSmax + PPC-spring

Load 1 Load 2 Load 3 Load 4

100-P-000172-E-03/08.2020


1.4 General technical data

General characteristics Unit Description, value

Recommended mounting orientation

With spool axis horizontal

Fluid temperature °C -20 … +80

Viscosity range mm2/sFor reliable operation 380 … 10For rated performance 80 … 20

Minimum fluid cleanliness level ISO 4406 code 20/18/15

Pressure bar

LVS08 pump port max. 250actuator port max. 280

tank port max. 200 static

LVS12 pump port max. 300 1)

actuator port max. 320 1)

tank port max. 50 static

Flow rate l/minMaximum flow rate at the P inlet = 260 1)

Maximum flow rate at the actuator ports = 180 with control Δp of 12bar

Hydraulic fluid

Recommendation: high-quality fluids with a mineral-oil base, such asHLP oils to DIN 51524 part 2.Biodegradable oils in groups HEES and HEPG can be used if the

manufacturer's instructions are followed.For other fluids please contact Bucher Hydraulics.

Valve block size Max. 10 directional sections per valve block

1) For higher pressures and flow rates, please enquire.

100-P-000172-E-03/08.2020


2 Inlet sections



Inlet pressure bar max. 300 1)

Nominal flow rate Open-Center systems l/min max. 200

Nominal flow rate Closed-Center systems l/min max. 260

Nominal flow rate, A and B to T l/min max. 300

1) For higher pressures, please enquire.

2.2 Characteristic curves

2.2.1 Priority valve

With no flow to downstream actuators

Q [l/min] = priority flowp [bar} = load pressure at priority actuator

0

25

50

75

100

p [bar]

Q [l/min]

0 50 100 150 200

This characteristic curve is valid in conjunction with inlet

sections that have an additional priority function.

2.2.2 Bypass pressure with 3-way pressure

compensator in neutral position

Q [l/min] = flow rate through the blockp [bar] = pressure drop from P to T

0

2

4

6

8

10

12

14

16

18

20

0 20 40 60 80 100 120

CF*

p [bar]

Q [l/min]

CF2H

Definition of the inlet sections see section 2.4.2.

2.3 Functions

2.3.1 LS Unloading

The most highly loaded directional valve signals its load

pressure to the LS gallery when it is in a working position.

In the neutral position, no load is signalled. In the proportional flow-sharing system, all control valves are connected

to the same load-sensing pressure. This means that pres

sure unloading in the neutral position is ensured by a con

trolled connection to tank (QLS approx. 0.7 l/min).

2.3.2 LSmax pressure relief

The LSmax pressure relief setting at the valve block have to

set below the pressure cut-off setting of the pump. Without

this pressure-relief function, all activated actuators stop

when any actuator reaches its end-position. If this is not a

disadvantage in a system, the LSmax pressure-relief func

tion in the valve block is not required.

IMPORTANT: the pressure setting at the LS pump have

to be higher than the LSmax pressure relief by at least theLS-Δp of the pump (see also section 4.4.4)

2.3.3 3-way pressure compensator

The 3-way pressure compensator keeps the pressure dif

ference between the pressure and control galleries inside

the block at a constant level. The rest flow passes to tank or

to the rest-flow port.

100-P-000172-E-03/08.2020


2.3.4 2-way pressure compensator

In the inlet section, the 2-way pressure compensator is

needed to convert a higher inlet pressure into a lower, con

trolled working pressure.This circuit is needed when several control blocks, each

with a different working pressure, are incorporated in the

overall system and one of these hydraulic circuits has to be

regulated to a lower pressure level.

If the pressure in the control line reaches the setting of a

pressure relief valve, the pressure compensator shuts offthe supply to the hydraulic circuit. In this way, a constant

pressure level is achieved in the respective hydraulic circuit.

2.3.5 Pressure control in P line

Direct-acting pressure-relief function in the inlet flow in P

line.

2.3.6 2-stage pressure relief (only in conjunc

tion with 3-way pressure compensator)

If the pressure in the control line reaches the setting of anupstream pressure-relief valve, the 3-way compensator

opens to tank, thus limiting the pressure in the pressure

gallery inside the block.

2.3.7 External priority function, with “Dynamic

Flow” in the LS line

An external actuator always has priority when flow is sup

plied by pump. Only when the external priority is completelysupplied, rest flow will feed the block functions. A defined

oil flow runs through the LS line to the priority actuator. This

has the effect of shortening the priority function's reaction

time.

2.3.8 LS pressure relief in the priority flow

If the pressure in the control line reaches the LS pressure-

relief setting, the flow to the priority actuator is reduced untilthe pressure in the LS line equals the setting of the pres

sure-relief valve. The flow that is no longer required is now

available to other actuators.

2.3.9 LS shut-off

In the type LVS-E-CCL... inlet sections for closed-center op

eration (LS pump), an additional LS shut-off is implemented

using a seat-type directional cartridge valve.This safety shut-off is used to interrupt the LS signal from the

control block to the pump (by connecting the LS signal in

side the block directly to tank).

2.4 Overview inlet sections

2.4.1 Overview of items, with part number

Model code Part number Model code Part number

LVS-E-CF*-G110A00/P1= 100030365 LVS-E-CCL-G110J24A53/P1= 100033188

LVS-E-CAP-G110A00 100027317 LVS-E-CCL-G110J12A48/P=/P1= 100036604

LVS-E-CB*-G110A00 100030496 LVS-E-CCL-G110J24A48/P=/P1= 100033704

LVS-E-CE*-G110A01/P1= 100029646 LVS-E-CF2-G110A00/P1= 100031115

LVS-E-CE*-G110A48/P=P1= 100032849 LVS-E-CF2H-G110A00/P1= 100036559

LVS-E-CE*-B110A42/P=P1= 100032566 LVS-E-CME-G101A54/P2= 100032775

LVS-E-CCL-G110J12A53/P1= 100036603 LVS-E-CGE-G100A00/P2=/P3 100027273

2.4.2 Inlet sections for systems with fixed-displacement pump (Open Center)

Symbol Description Part number

P

R LSLS

P1

LVS-E-CF*-G110A00/P1= 100030365

� 3-way compensator

� LSmax pressure relief adjustable, P1 =

� Two-stage pressure relief, P1 =

� Control Δp = 12 bar

� QIn up to 200 l/min

� Port threads: P and R = G1”

Give the pressure setting P1 in bar with the ordering information

This results in P = P1 (LSmax) + Δp

100-P-000172-E-03/08.2020


2.4.3 Inlet sections for systems with load-sensing pump (Closed Center)


P

R LS

LVS-E-CAP-G110A00 100027317

� QIn = up to 260 l/min

� Port threads: P and R = G 1”, LS = G¼”

P

R LS

LVS-E-CB*-G110A00 100030496

� LS-unloading


� Port threads: P and R = G1”, LS = G¼”

P

R LS

P1

LVS-E-CC*-G110A00/P1= see ordering code

� LSmax pressure relief, fixed setting, P1 = e.g. 210 bar

� Choice of LSmax pressures P1 [bar]:

100, 125, 140, 160, 175, 190, 210, 230, 250, 280, 300





L V S C C -- E - G 1 1 0* A 0 0

Inlet section

Function: without LS unloading

with LSmax pressure relief = CC*

Port threads to DIN 3852 - Part 2

Design stage

Option

LSmax pressure setting P1 [bar]: 100, 125, 140, 160, 175, 190, 210, 230, 250, 280, 300

/ P 1 =

P

R LS

P1

LVS-E-CE*-G110A00/P1= see ordering code

� LS-unloading

� LSmax pressure relief, fixed setting, P1 = e.g. 210 bar

� Selection of LSmax pressures P1 [bar]:100, 125, 140, 160, 175, 190, 210, 230, 250, 280, 300





100-P-000172-E-03/08.2020


L V S C E -- E - G 1 1 0* A 0 0

Inlet section

Function:

with LS unloading with LSmax pressure relief = CE*

Port threads to DIN 3852 - Part 2

Design stage

Option

LSmax pressure setting P1 [bar]: 100, 125, 140, 160, 175, 190, 210, 230, 250, 280, 300

/ P 1 =

P

R LS

P1

LVS-E-CE*-G110A01/P1= 100029646

� LS-unloading

� LSmax pressure relief adjustable, P1 =


� Port threads: P and R = G1”,LS = G¼”



P

R LS

P

P1

LVS-E-CE*-G110A48/P=/P1= 100032849

� LS-unloading

� LSmax pressure relief adjustable, P1=

� Pressure relief can be set in the P inlet, Q = 140 l/min, P =



Give the pressure setting P and P1 in bar with the ordering information


P

R LS

PP1

LVS-E-CE*-G110A42/P=/P1= 100032566

� LS-unloading


� Pressure relief can be set in the P inlet, Q = 60 l/min, P =





P

RLS

P1

LVS-E-CCL-G110J12A53/P1= (12 V DC)LVS-E-CCL-G110J24A53/P1= (24 V DC)

100036603100033188

� Electrical LS-disable via 2/2 seat valve, de-energised open






100-P-000172-E-03/08.2020


P

R LS

MP

P

P1

Note:

� Test port for P inlet

LVS-E-CCL-G110J12A48/P=/P1= (12 V DC)LVS-E-CCL-G110J24A48/P=/P1= (24 V DC)

100036604100033704

� Electrical LS-disable via 2/2 seat valve, de-energised open



� Pressure relief can be set in the P inlet, Q = 140 l/min




P

R LSP1

LVS-E-CF2-G110A00/P1= 100031115


� LS-unloading

� Flow cut-off, adjustable P1 =






P

R LSP1

LVS-E-CF2H-G110A00/P1= 100036559


� LS-unloading

� Flow cut-off, adjustable P1 =

� Control p = 15 bar





D

LSP

R

MP

Note:

� Test port for P inlet

P2

LVS-E-CME-G101A54/P2= 100032775

� Internal priority function

� Control p = 9 bar

� LS-unloading

� LSmax pressure relief, priority flow, adjustable P2=


� Rest flow at port D = 200 l/min

� Port threads: P and R = G1”, MP and LS = G¼“



Description:

The LVS valve sections mounted after the inlet section are given priority sup

ply. The maximum pressure for priority- and surplus-flow is set using P2. The

rest flow is available at port D.

100-P-000172-E-03/08.2020


PL

P

LS

R

LSL

P2

P3

LVS-E-CGE-G100A00/P2=/P3= 100027273

� LS-unloading

� LSmax pressure relief, priority flow, adjustable P2 = / P3 =



� QD up to 80 l/min

� Priority flow at port PL

� Port threads: P and R = G1”, PL = G½”, LS and LSL = G¼”

Give the pressure settings P2 and P3 in bar with the ordering information

This results in P = P2/3 (LSmax) + Δp

Description:

The priority function is routed via port PL to a prioritised external actuator and

is load-independent, thanks to the pressure compensator. The maximum pres

sure of the prioritised flow can be limited with the P2 pressure relief function. The

rest flow is available to the LVS directional valves downstream of the inlet section. The maximum pressure can be set with P3 (must be higher than the priority

pressure P2).

Dynamic LS:

- Application with Orbitrol

At port LSL there is a permanent flow of control oil of about 0.8 l/min. This is

mostly used in systems with a steering function.

If another valve block is connected to PL, there must be no dynamic LS (please

discuss with Bucher Hydraulics).

2.5 Dimensions

2.5.1 LVS-E-CF*-G110A00 (100030365)

135

M10

90 20

66

133

101

185

212,5

43 67,5

15

69

15

G1”

G1”

G1/4”

2.5.2 LVS-E-CAP-G110A00 (100027317)

57 133

32,5 67,5

20

135

90

45

44

M 10

15

15

66

G1”

G3/4”

100-P-000172-E-03/08.2020


2.5.3 LVS-E-CB*-G110A00 (100030496)

90

M10

17

20

66

135

13

3

44

,75

10

1

67,532,5 15G1/4”

G1”

G3/4”

2.5.4 LVS-E-CC*-G110A00/P1=

90

M10

17

20

66

135

133

44,7

5

101

67,532,5 15G1/4”

G1”

G3/4”

2.5.5 LVS-E-CE*-G110A00/P1=

90

M10 17

135

44,7

5

101

133

20

66

67,532,515

G1/4”

G1”

G1”

2.5.6 LVS-E-CE*-G110A01 (100029646)

90M10

17

13549,7

2066

13

3

44

,75

10

1

67,532,5 15

G1/4”

G1”

G3/4”

90

13549,7

90

13549,7

2.5.7 LVS-E-CE*-G110A48 (100032849)

90

M10 17

13549,7

44,7

5

101

133

221

20

66

67,532,515

G1/4”

206,7

G1”

G1”

2.5.8 LVS-E-CE*-G110A42 (100032566)

44,7

5

101

66

135

90

17

M10

67,532,5 15

133

20

G1”

G1”

100-P-000172-E-03/08.2020


2.5.9 LVS-E-CCL-G110J12A53 (100036603)

LVS-E-CCL-G110J24A53 (100033188)

44

,75

10

1

66

135

90

17

M10

67,5

32,5

15

13

3

20

2,5

20

G1”

G1”

2.5.10 LVS-E-CCL-G110J12A48 (100036604)

LVS-E-CCL-G110J24A48 (100033704)

90M10 1

7

13549,7

206,7

20

66

15G1/4”

44,7

5

101

133

221

G1”

G1”

67,532,5

2.5.11 LVS-E-CF2-G110A00 (100031115)

LVS-E-CF2H-G110A00 (100036559)

M10

90

13577,5

77,5

31

17

133

20

66

182,7

15

G1/4”

G3/4”

34

2.5.12 LVS-E-CME-G101A54 (100032775)

90

M10

13566

218,3

15

28

13

3

29

87

73,5

1,5

15

97

143,7Mx1

.51

2

G1”

G1”

17

G1/4”50

2.5.13 LVS-E-CGE-G100A00 (100027273)

M10

90

15

13566

204

15

97

132

1753

30

81.5

133

81

181

28.5

50

7.5

17

67.5

G1”

G3/4”

100-P-000172-E-03/08.2020


3 Intermediate sections


3.1.1 Adjustment range of 3-way proportional

pressure-control valve

I [A] = solenoid current

250

30

01,90 +10% I [A]12V0,95 +10% I [A]24V0,25 0,5 0,75

0,5 1,0 1,5

100

200

150

50

Pressure range 8290-3600 PSI (20-250 bar)

Pressure range 6220-2300 PSI (15-160 bar)

This characteristic curve is valid in conjunction with inter

mediate sections that have a 3-way pressure control (LVS-

Z-PDR…).

3.1.2 Control characteristic as a function

of flow rate

250

200

150

50

030 10 10 30

p [bar]

40 20 0 20 40 Q [l/min]

100

50 50

P-PR PR-T

3.2 Overview of items, with part number


LVS-Z-CF2-****A00/P1= 100031656 LVS-Z-PDRC6FJ-G1/2A00 100031117

LVS-Z-CME-G3/4A10/P2=/P3= 100035201 LVS-Z-PDRA8FJ-G1/2A00 100029118

3.3 Overview of intermediate sections


P1

LVS-Z-CF2-****A00/P1= 100031656

2-way compensator for a lower pmax in the downstream part of the block,

pressure is adjustable

� LS-unloading

� Control Δp 12 bar

� Flow cut-off adjustable P1=

� QNom up to 180 l/min


This results in P = P1 + 12 bar

100-P-000172-E-03/08.2020


P

R

LS

P2 P3

LVS-Z-CME-G3/4A10/P2=/P3= 100035201

� Internal priority function

� LS-unloading

� Control Δp 9 bar

� LSmax pressure relief, priority flow, adjustable P2 =

rest flow, adjustable P3 =


Give the pressure setting P2 and P3 in bar with the ordering information

Description: Priority function – the parts of the block downstream of this inter

mediate section are given priority supply. The rest flow supplies the part of the

block upstream of the intermediate section. The maximum pressure of the restflow is set with an LSmax pressure relief function. The maximum pressure of the

prioritised flow can be limited with the P2 pressure relief function. The rest flow

is available to the LVS directional valves downstream of the inlet section. The

maximum pressure can be set with the P3 pressure relief function.

BPB

LVS-Z-BHR…-G1/2…B1000/P=… see ordering code

� Hitch control valve

� Selection of actuator flow rates [l/min]: 16, 25, 32, 40, 50, 63, 80, 100

� Choice of pressure ranges PB [bar]:50, 63, 80, 100, 125, 140, 160, 175, 190, 210, 230, 250, 280, 300

Description: Two-stage, proportional, electrohydraulic 3/3 directional valve for

single-acting, leak-free functions. The actuator flow rate is set by the propor

tional, electrohydraulic pilot valve. A throttle valve in the return line enables a

practically load-independent lowering speed. The pressure relief PB protects

the actuators from undue pressure peaks.

L V S B H -- Z - G 1 / 2R B 0 0 / P B =

Intermediate section

Function

Actuator flow rate [l/min]:16, 25, 32, 40, 50, 63, 80, 100 = 016 - 100

Port threads to DIN 3852 - Part 2 B = G½”

Plug type AMP Junior Timer = J Deutsch plug DT04-2P-EP04 = T

Supply voltage 12V DC = 12 24V DC = 24

Design stage

Option

Pressure range PB [bar]: 50, 63, 80, 100, 125, 140, 160, 175, 190, 210, 230, 250, 280, 300

- 1 0

R P LS

B

LVS-Z-PDRC6FJ-G1/2A00 (12 V DC) 100031117

3-way proportional pressure control of actuators; preferred in applications that

require a supporting or counterbalancing pressure. E.g. ground-guided equip

ment such as snow ploughs, mowers, harvesting systems, .....

� 3-way pressure reducing valve

� Controllable pressure range 15-160 bar

� QActuator = 40 l/min Port thread B = G½“

100-P-000172-E-03/08.2020


R P LS

B

LVS-Z-PDRA8FJ-G1/2A00 (12 V DC) 100029118

3-way proportional pressure control of actuators; preferred in applications that

require a supporting or counterbalancing pressure. E.g. ground-guided equip

ment such as snow ploughs, mowers, harvesting systems, .....

� 3-way pressure reducing valve

� Controllable pressure range 20-250 bar

� QActuator = 40 l/min Port thread B = G½

3.4 Dimensions

3.4.1 LVS-Z-CF2-****A00 (100031656)

20

7390

17

M10

13577,5

13

3

3.4.2 LVS-Z-CME-G3/4A10 (100035201)

66 135

204

27

130

179

26 49.5 57

95

32

67.5

28

G 3/4"

3.4.3 LVS-Z-BHR100-G1/2J12A..

36 65

115

130

278

48

132 1

76

12 V DC, AMP Junior Timer

3.4.4 LVS-Z-PDRC6FJ-G1/2A00

(100031117 / 100029118)

135

138.5

165.1

130

22

0

29

66

31 67.5

12 V DC, AMP Junior Timer

G 1/2"

100-P-000172-E-03/08.2020


4 Directional valve sections

Directional valve series LVS08 and LVS12 can be freely

combined. Ideally, the LVS12 sections are the first ones af

ter the inlet section, followed by the LVS08 sections.


Description LVS08 LVS12

Control types:- direct acting ON/OFF solenoid- direct acting proportional solenoid

- two-stage, proportional, electrohydraulically operated

XX

-

--

X

Nominal flow rate [l/min] 50 180

Maximum inlet pressure [bar] 250 300 1)

Maximum pressure at the actuator ports A and B [bar] 280 320 1)

Possible additional functions:- separate, proportional flow rates for A and B per valve section- pressure relief and make-up function

- electrically operated seat valves (integral)- manual override by pin- manual override by hand lever- spool-stroke limiter- bolt-on plate with seat valves- bolt-on plate with load-control valves

XXX-XX

XX

-XXX--


4.2 Technical data for pressure relief / make-up valve


Nominal flow rate l/min 60permissible tolerance = +/- 10% at QIn = 3 l/min


4.3.1 Spool in maximum operating position

Measured with spool type O = 180 l/min

Q [l/min] = flow rate P � A/B and A/B � Tp [bar] = pressure drop P � A/B and A/B � T

p [bar] / P - A/B

0

7

14

21

28

35

0 50 100 Q [l/min]150

1 valve section

9 valve sections

4.3.2 Pressure drop with individual operation

Measured with spool type O = 180 l/min

Q [l/min] = flow rate A/B � Tp [bar] = pressure drop A/B � T

p [bar] A/B - T

0

5

10

15

20

25

0 50 100 150 200 250 300 Q [l/min]

9 valve sections

1 valve section

100-P-000172-E-03/08.2020


4.4 Functions

4.4.1 Directional function

3-way valves have only one actuator port. 4-way valves are

designed for double-acting actuators.

4.4.2 Two independent 3/2 prop. directional

valves

Spool types 6A and 6D are designed to supply 2 motor

drives.

By dividing the control spool 6A, 2 motor drives can be im

plemented in parallel, and independently of one another, in

one valve body.

4.4.3 Load-independent operation

When several valves are operated simultaneously, the

highest actuator pressure is signalled to the 3-way pressure

compensator or to the pump control. The control pressure-

difference of the system pressure control (3-way pressure

compensator, variable-delivery pump) acts directly on themost highly loaded actuator and ensures load-independent

control. The lower loaded actuators can be made load-inde

pendent by using individual section compensators.

4.4.4 LS-max pressure relief

If no oil flows out from an actuator port although the valve is

in an operated position (e.g. cylinder at end-stop), the Ppressure is signalled in the LS ring circuit behind all com

pensators. The compensators in the individual functions

would now also close due to their spring forces, and all actu

ators would remain stationary.

To prevent this from happening, the LSmax pressure is lim

ited by a pressure-relief function. The discharge of LS flowreduces the pressure before the LS ring circuit, which re

sults in the planned p being kept constant. The actuators

in the system now operate without any malfunction.

4.4.5 Pressure compensator function

With the LVS08 valve series, there are two versions of the

pressure compensator. The standard pressure compen

sator can be used in all applications and functions.

There is also a pressure compensator that can be config

ured for improved fine control. To increase the functionalstability, this variant is the preferred choice for oscillation-

critical functions (usually motor functions).

4.4.6 Pressure relief and make-up function

The pressure relief valves protect actuators from unaccept

ably large pressure peaks when the actuator is operated or

when external forces act on the actuator. The make-up

(anti-cavitation) function supplies oil to the actuator when

the tank pressure is higher than the actuator pressure.

4.4.7 Load sensing

By means of the load sensing system, the highest prevailing

actuator pressure is signalled to all proportional flow-shar

ing valves.

4.4.8 Conversion factors

Without changing the spool position, the flow rate at the ac

tuator ports can be changed by altering the LS Δp setting at

the compensator or pump controller. The corresponding

conversion factors are shown in the following table.Actuator flow rate for each spool is defined at 12 bar.

LS �p Conversion factor

6 bar 0.7

8 bar 0.8

9 bar 0.86

12 bar (standard) 1.0

15 bar 1.12

16 bar 1.15

18 bar 1.25

20 bar 1.30

4.4.8.1 Example

LS p 18 bar

spool 120 l/min

120 x 1,25 = 150 l/min

= max. flow rate achieved at 18 bar control Δp

4.4.9 Spool types for the directional valve sec

tions

A spool Actuator flow closed to tank in middle

position.

D + J spools Actuator connected to tank in the

middle position

4A + 4D spools For double-acting actuators

3A + 3J spools For single-acting actuators

6A + 6D spools Split spool, for two single-acting actu

ators in one section.

100-P-000172-E-03/08.2020


5 Directional sections LVS08 – with ON/OFF or proportional solenoids


Description Unit ON/OFF solenoid Proportional solenoid

Maximum flow rate l/min 50

Maximum inlet pressure bar 250

Maximum inlet pressure with manual operation bar 250

Maximum pressure at the actuator ports bar 280

Maximum pressure at the actuator ports with manualoperation

bar 280

Spool increments by actuator flow rates at 12 bar Δp l/min 6 (A), 10 (B), 16 (C), 25 (D), 32 (E), 40 (F), 50 (P)

Power consumption and voltage tolerance ± 10%W 30

max. 30 at 2.5 A / 12 Vmax. 30 at 1.25 A / 24 V

Energising currentA

0.8 - 2.5 for 12 V0.4 - 1.25 for 24 V

Duty cycle % 100% (2.5 A / 12 V or 1.25 A / 24 V)

Protection class AMP Junior Timer: IP65Deutsch plug DT04: IP67 (DIN EN 60529)

Override pin Φ 6 2

Main characteristics of the seat valves Unit Description, Value


Power consumption W 20

Voltage tolerance % +/- 10

Coil resistance Ώ 7.4 for 12 V 28.4 for 24 V

Switching time: openingclosing

msec50100

5.2 Characteristic curve

5.2.1 Control characteristic

Valve with proportional solenoid and 12 bar pressure drop

at the orifice.

Q [l/min] = flow rate at the actuator outlet portI [mA] = current at the proportional solenoids

0

10

20

30

40

50

60

50 l/min (P)

40 l/min (F)

25 l/min (D)

16 l/min (C)

10 l/min (B)

500 700 900 1100 1300 1500 1700 1900 2100 2300 I [mA] 12V250 350 450 550 650 750 850 950 1050 1150 I [mA] 24V

Q [l/min]

100-P-000172-E-03/08.2020


5.3 LVS08 Standard

5.3.1 Standard version

� Port threads for actuator A + B = G½”

� Pressure compensator in A and B

� Override pin

5.3.2 Freely configurable functions

� Flow rate

� Spool type in mid-position

� Compensator function

� Control type (proportional solenoid or ON/OFF)

� Plug type

A

B

ba

R P LS

5.3.3 Options menu

Spool type 3A 3J 4A 4D

06 l/min at B (A closed) = *A3J 06 l/min at A and B = AA4A AA4D10 l/min at B (A closed) = *B3J 10 l/min at A and B = BB4A BB4D

16 l/min at B (A closed) = *C3A *C3J 16 l/min at A and B = CC4A CC4D

25 l/min at B (A closed) = *D3A *D3J 25 l/min at A and B = DD4A DD4D

32 l/min at B (A closed) = *E3J 32 l/min at A and B = EE4A EE4D

40 l/min at B (A closed) = *F3J 40 l/min at A and B = FF4A FF4D

50 l/min at B (A closed) = *P3A *P3J 50 l/min at A and B = PP4A PP4D

Control type

ON/OFF solenoid 12 V = A

ON/OFF solenoid 24 V = B

Proportional solenoid 12V = CProportional solenoid 24V = D

Pressure compensator function standard fine control 1)

for actuator B = 4 B

for actuator A = 8 A

for actuator A + B = 5 C

Plug type

AMP Junior Timer = J

Deutsch plug DT04-2P-EP04 = T

1) Fine controlled compensator function for increased stability in the hydraulics systems (see section 4.4.5).

5.3.4 Plug type

AMP Junior Timer

-J..-

Deutsch plug DT04-2P-EP04

-T..-

100-P-000172-E-03/08.2020


5.3.5 Control type

Proportional solenoid

with override pin and

starting point adjustment

(starting point is set by the

factory)

A / B C / DON/OFF solenoid

with override pin

5.3.6 Dimensions

48

24

87.51341

19

G ½”

73

19 15

G ½”

A B

P�A B P

�

ON/OFF solenoid = 282Proportional solenoid = 311

5.3.7 Ordering code

Directional valve section size 08

Spool type

Pressure compensator function

Control type

Plug type

Port threads to DIN 3852 Part 2: actuator ports A + B = G½”

Override pin

Options

Design stage

� White fields = data specified by Bucher Hydraulics

Grey fields = data from the overview of sections 5.3.3

L V S A 0 00 8 2 1 0 0 C

100-P-000172-E-03/08.2020


5.4 LVS08 Standard with pressure relief / make-up valve



� Pressure compensator in actuator A + B

� Override pin

� Pressure relief and make-up function (pressure settingselectable)


� Flow rate


� Pressure compensator function


� Plug type

A

B

ba

R P LS

5.4.3 Options menu

Control type




Plug type



Pressure relief and make-up function

adjustable 70 - 230 bar = A

adjustable 150 - 380 bar = B

fixed setting (values in bar):

25 = D, 32 = E, 40 = F, 63 = H, 80 = I, 100 = K, 125 = L, 140 = M,160 = N, 175 = O, 190 = P, 210 = Q, 230 = R, 250 = S, 280 = T

Cavity prepared (closed, no function, prepared for retrofitting anti-shock valves, with plug) = #












1) = Fine controlled compensator function for increased stability in the hydraulics systems (see section 4.4.5).

100-P-000172-E-03/08.2020


5.4.4 Plug type

AMP Junior Timer

-J..-


-T..-

5.4.5 Control type





factory)


with override pin

5.4.6 Dimensions

A B

P�A

�

PB

134 90.5

48

24

73

119

15

19

G1/2" G1/2"

ON/OFF solenoid = 290

Proportional solenoid = 315

5.4.7 Ordering code

Directional valve section

size 08

Spool type


for actuator port A + B

Control type

Plug type

Port threads to DIN 3852 Part 2, actuator A and B =G½”

Desig

n s

tage

Options

Overr

ide p

in



For adjustable

valves

Pressure setting

PA = ... bar

PB = ... bar

L V S A 0 00 8 2 1 0 0 C -

Pressure relief/make-up valveActuator Acavity prepared = #

Actuator Bcavity prepared = #

100-P-000172-E-03/08.2020


5.5 LVS08 Standard, surface for bolt-on valve


� Prepared for bolt-on plate


� Override pin


� Flow rate




� Plug type

A

B

ba

R P LS

5.5.3 Options menu

Plug type



Control type



Proportional solenoid 12V = C

Proportional solenoid 24V = D













5.5.4 Plug type

AMP Junior Timer

-J..-


-T..-

100-P-000172-E-03/08.2020


5.5.5 Control types





factory)


with override pin

5.5.6 Dimensions

48

24

87.5134

117

1,5

±0,0

5

�17,8 H11(-0,11)

�17,8 H11(-0,11)

A B

P�A P

�

B



5.5.7 Ordering code

L V S


Spool function


Control type

Plug type

Prepared for bolt-on plate

Override pin

Options

Design stage

A 0 00 8 0 0 0 0 C



100-P-000172-E-03/08.2020


5.6 LVS Standard, surface for bolt-on valves, with pressure relief / make up valve


� Prepared for bolt-on section

� Pressure compensator in actuator A and B

� Override pin

� Pressure relief and make-up function (pressure settingselectable)


� Flow rate




� Plug type

A

B

ba

R P LS

5.6.3 Selection menu

Plug type









Control type



Proportional solenoid 12V = C

Proportional solenoid 24V = D













100-P-000172-E-03/08.2020


5.6.4 Plug type

AMP Junior Timer

-J..-


-T..-

5.6.5 Control type





factory)


with override pin

5.6.6 Dimensions

A B

P�A

�

PB

134 90.5

48

24

73

119

15

19

G1/2" G1/2"



5.6.7 Ordering code


size 08

Spool type


for actuator A and B

Control type

Plug type

Prepared for bolt-on plate

Desig

n s

tage

Options

Overr

ide p

in



For adjustable

valves

Pressure settings

PA = ... bar

PB = ... bar

L V S A 0 00 8 0 0 0 0 C

Pressure relief /make-up valveActuator ACavity prepared = #

Actuator BCavity prepared = #

100-P-000172-E-03/08.2020


5.7 LVS08 with integrated double seat valve


� Port thread for actuator A + B = G½”


� Double seat valve, solenoid operated


� Flow rate




� Plug typeba

A

B

R P LS


Seat valves, solenoid operated, Qmax 70 l/min, de-energised closed

Double seat valve, solenoid operated, in A + B = J8

Double seat valve, solenoid operated, in A + B with manual override, 'Knob-Style', push-and-turn = J8D

Double seat valve, solenoid operated, in B = J7 2)

Double seat valve, solenoid operated, in B with manual override, 'Knob-Style', push-and-turn = J7D 2)

Control type




Plug type







32 l/min at B (A closed ) = *E3J 32 l/min at A and B = EE4A EE4D








2) Can only be used with spool types 3A and 3J.

100-P-000172-E-03/08.2020


5.7.4 Plug type

AMP Junior Timer

-J..-


-T..-

5.7.5 Control type





factory)


with override pin

5.7.6 Dimensions

P�A PB�

181

90.5134

48

24

75

119 G

1/2

"



5.7.7 Ordering code


Spool type

Pressure compensator function for actuator A + B

Control type

Plug type

Port threads to DIN 3852 - Part 2 - actuator ports A + B = G½”

Desig

n s

tage

Options

Overr

ide p

in


Grey fields = data from the overview of sections 5.7 3

L V S A 0 00 8 2 1 0 0 E -

Seat valve, solenoid operated

100-P-000172-E-03/08.2020


5.8 LVS08 with additional manual handlever




� Additional manual handlever with override pin Pmax 250

bar. With electrical operation, the hand lever remains in

the 0 position (hand lever does not move with the spool).


� Flow rate




� Plug type

A

B

b

a

R P LS

5.8.3 Options menu

Control type




Plug type















5.8.4 Plug type

AMP Junior Timer

-J..-


-T..-

100-P-000172-E-03/08.2020


5.8.5 Control type





factory)


with override pin

5.8.6 Dimensions

28 28

67

134

80

44

75

48

17.3

A B

P�A

1

G 1/2" G 1/2"

PB

�


Proportional solenoid = 157,5



1 Set screws for spool stroke limiting (flow limiting only works with manual operation)

5.8.7 Ordering code


Spool type


Control type

Plug type

Port threads to DIN 3852 - Part 2 - actuator ports A + B = G½”

Additional manual handlever with override pin

Options

Design stage



L V S N 0 00 8 2 1 0 0 D

100-P-000172-E-03/08.2020


5.9 LVS08 with additional manual handlever and pressure relief / make-up valve



� Override pin with manual handlever Pmax 250 bar

With electrical operation, the hand lever remains in the 0

position (the hand lever does not move with the spool).

� Pressure relief – make-up valve / choice of pressure settings


� Flow rate




� Plug type

A

B

b

a

R P LS









Control type




Plug type














100-P-000172-E-03/08.2020


5.9.4 Plug type

AMP Junior Timer

-J..-


-T..-

5.9.5 Control type





factory)


with override pin

5.9.6 Dimensions

28 28

67

134

80

44

75

48

17.3

A B

P�A

1

G 1/2" G 1/2"

PB

�





1 Set screws for spool stroke limiting (flow limiting only works with manual operation)

5.9.7 Ordering code

Directional valve section,

size 08

Spool type

Compensator function for actuator A and B

Control type

Plug type

Port threads to DIN 3852 Part 2, actuator ports A + B = G½”

Desig

n s

tage

Options



For adjustable

valves:

Pressure setting

PA = ... bar

PB = ... bar

L V S N 0 00 8 2 1 0 0 D -

Pressure relief /make-up valveActuator ACavity prepared = #

Actuator BCavity prepared = #

Overr

ide p

in w

ith a

dditio

nal

manual handle

ver

100-P-000172-E-03/08.2020


6 Bolt-on sections LVS08

6.1 Function

6.1.1 Load-control valve

These bolt-on load control valves, with integrated anti-

shock function, ensure load-independent lowering motion

at speeds determined by the inlet flow, with leak-free shut-off when the directional valve is in its neutral position. The

anti-shock valve setting should preferably be setted higher

than 1,5 times the highest load pressure. Turning the ad

justing screw in the clockwise direction reduces the setting,

and this can also be used for emergency lowering of the

load.

6.1.2 Seat valves

These seat valves, which can be opened by solenoid or by

hydraulic pressure, shut off the actuator lines with zero leak

age.

6.1.3 Seat valves with pressure relief and

make-up valve

These solenoid-opened seat valves with service line pres

sure relief and make-up valves shut off the actuator lines

with zero leakage and protect the actuator from unaccept

able large pressure peaks.



LVSPRE-ZVAZVB-21-J12-C2000 100040196 LVSPBH-***-S30-21-A00/P= 100029653

LVSPRE-ZVAZVB-21-J24-C2000 100040200 LVSPRH-DVADVB-21-***-A00 100037249

LVSPBH-S30-S30-21-A00/P= 100031107 LVSPRH-DVA***-21-***-A00 100037896

6.3 Overview bolt-on sections


B

A

LVSPRE-ZVAZVB-21-J12-C2000LVSPRE-ZVAZVB-21-J24-C2000

100040196100040200

Bolt-on section with double seat valve. These solenoid-opened seat valves

shut off the actuator lines with zero leakage.

� Qmax = 50 l/min

� Port threads G½”

A

B

LVSPRH-DVADVB-21-***-A00 100037249



� Qmax = 50 l/min


A

B

LVSPRH-DVA***-21-***-A00 100037896



� Qmax = 50 l/min


100-P-000172-E-03/08.2020


A

B

LVSPBH-S30-S30-21-A00/P= 100031107

These bolt-on load control valves, with integral anti-shock function, ensure

load-independent lowering motion at speeds determined by the inlet flow, with

leak-free shut-off when the directional valve is in its neutral position.

� Load-holding valve in actuator ports A and B

� Pressure setting of anti-shock valves PA and PB is adjustable (specify when

ordering)

� Qmax = 50 l/min

� Pilot ratio of the load-holding valves = 3:1


A

B

LVSPBH-***-S30-21-A00/P= 100029653

These bolt-on load control valves, with integral anti-shock function, ensure

load-independent lowering motion at speeds determined by the inlet flow, with

leak-free shut-off when the directional valve is in its neutral position.

� Load-holding valve in actuator port B, adjustable pressure

� Qmax = 50 l/min


A

B

LVSPEC-230-230-21-J24-C02 see ordering code

These solenoid-opened seat valves with service line pressure relief and make-

up valves shut off the actuator lines with zero leakage and protect the actuator

from unacceptably large pressure peaks.

� Actuator ports A and B virtually leak-free

� Pressure relief in actuator ports A and B

� Choice of pressure relief settings for A + B:

100, 125, 140, 160, 175, 190, 210, 230, 250, 280, 300 bar

� Qmax up to 50 l/min


L V S - 2 1

Bolt-on valve with pressure-relief

Actuator port A:

Pressure-relief - pressure setting [bar]

100, 125, 140, 160, 175, 190, 210, 230, 250, 280, 300

Actuator port B:

Pressure-relief - pressure setting [bar]

100, 125, 140, 160, 175, 190, 210, 230, 250, 280, 300

Port threads to DIN 3852 - Part 2 / actuator A+B = G½“

Plug type and nominal voltage: AMP Junior Timer 24 V DC = J24

Design stage

Seat valves, solenoid opened: Double seat valves in actuator ports A + B

P E C - - - J 2 4 - C 0 2

100-P-000172-E-03/08.2020


6.4 Dimensions

6.4.1 LVSPRE-ZVAZVB-21-J12-C00 (100040196)

LVSPRE-ZVAZVB-21-J24-C00 (100040200)

G1

/2"

G1

/2"

28

28

47

11

0

170 47

23.5

6.4.2 LVSPBH-S30-S30-21-A00 (100031107)

18 18

130

831

14,4

5

23,5

47

G1/2

”

G1/2

”

6.4.3 LVSPBH-***-S30-21-A00 (100029653)

23,5

47

18

G1/2

”

831

14,5

18

G1/2

”

6.4.4 LVSPEC-230-230-21-J24-C02

G1/2" G1/2"

28

172

318

47

82

23.5

6.4.5 LVSPRH-DVADVB-21-***-A00 (100037249)

LVSPRH-DVA***-21-***-A00 (100037896)

65

126

45

22.535

91

G1/2" G1/2"

63

100-P-000172-E-03/08.2020


7 Directional valve sections LVS12 – electrohydraulic, two-stage


General characteristics Unit Value


Maximum inlet pressure bar 300 1)

Maximum pressure at the actuator ports bar 320 1)

Spool increments by actuator flow rates at 12 bar Δpl/min

16(C), 25(D), 40(F), 50(P), 63(G), 80(H), 100(K),125(L), 150(M), 180(O)

Nominal voltage V DC 12 or 24

Power consumption W max. 18 (at 1.5 A + 12 V or 0.75 A + 24 V)

Energising currentA

0.6 … 1.5 with 12 V0.3 … 0.75 with 24 V

Duty cycle % 100

Protection class AMP: IP65Deutsch plug DT04-2P-EP04: IP67 (DIN EN 60529)


Technical data pressure relief valve Unit Value

Limit currentA

1.6 with 12 V0.8 with 24 V

Coil resistanceΏ

5.3 with 12 V21.2 with 24 V

PWM frequency (dither) Hz 100

100-P-000172-E-03/08.2020


7.2 Characteristic curve

Proportional, electrohydraulically operated valve with 12 bar pressure drop at the orifice

Q [l/min] = flow rate at the actuator outlet portI [mA] = current at the solenoids

0

20

40

60

80

100

120

140

160

180

500 600 700 800 900 1000 1100 1200 1300

250 300 350 400 450 500 550 600 650

I [mA] 12V

I [mA] 24V

Q [l/min]

1350

675

1

2

3

4

5

6

8

9

7

1 Spool type C (16 l/min)

2 Spool type D (25 l/min)

3 Spool type F (40 l/min)

4 Spool type G (63 l/min)

5 Spool type H (80 l/min)

6 Spool type K (100 l/min)

7 Spool type L (125 l/min)

8 Spool type M (150 l/min)

9 Spool type O (180 l/min)

100-P-000172-E-03/08.2020


7.3 LVS12 Standard


� Port threads for actuator A + B = G¾”

� Pressure compensator in A + B


� Flow rate


� Plug type

� Manual override

� Spool stroke-limiter feature (can be factory-setted)Only with spool types 3A, 4A and 4D A

B

ba

R P LS


Spool type

Compensator function

for actuator A B. A+B A+B A+B A+B

B closed A closed

16 l/min = *C3JB = CC4AC = CC4DC = CC6DC

25 l/min = *D3JB = DD4AC = DD4DC = DD6AC = DD6DC

32 l/min = *E3JB = EE4AC = EE4DC = EE6AC = EE6DC40 l/min = *F3JB = FF4AC = FF4DC = FF6AC = FF6DC

50 l/min = *P3JB = PP4AC = PP4DC = PP6AC = PP6DC

63 l/min = *G3JB = GG4AC = GG4DC = GG6AC = GG6DC

80 l/min = *H3JB = HH4AC = HH4DC = HH6AC = HH6DC

100 l/min = *K3JB = KK4AC = KK4DC = KK6AC = KK6DC

125 l/min = *L3JB = LL4AC = LL4DC = LL6DC150 l/min = *M3JB = MM4AC = MM4DC = MM6DC

180 l/min = O*3AA = *O3JB = OO4AC = OO4DC = OO6DC

Manual override by pin / spool-stroke limiter

Manual override = A

Manual override and spool-stroke limiter = C 1)

Control type

Electrohydraulic, two stage, 12 V = F

Electrohydraulic, two stage, 24 V = G

Plug type



3A 3J 4A 4D 6A 6D

1) Spool stroke limiting is not possible with split spools (spool selection 3J, 6A, 6D).

100-P-000172-E-03/08.2020


7.3.4 Plug type

AMP Junior Timer

-J..-


-T..-

7.3.5 Dimensions

48

24

130 50

230

119

150.5

G3/4”

28 28

65

A B

P�A PB

�

52

119

150.5

28

65

B

Spool type 3J, 6A and 6D

PB

�

7.3.6 Ordering code

Directional valve section, size 12

Spool type and pressure compensator

Control type

Plug type

Port threads for actuators A + B = G¾”

Override pin and spool-stroke limiter

Options

Design stage:

for spool type 3A, 4A, 4D = B

for spool type 3J, 6A, 6D = D



L V S 1 01 2 2 2 0 0 D

100-P-000172-E-03/08.2020


7.4 LVS12 with pressure relief /make-up valves

7.4.1 Standard functions

� Port thread for actuator A + B = G¾”


� Pressure relief/make-up valve (selectable pressure set

ting)

7.4.2 Free configurable functions

� Flow rate


� Plug type

� Manual override

� Spool stroke-limiter feature (can be factory-setted)

Only with spool types 3A, 4A and 4D

A

B

ba

R P LS


Spool type

Compensator function

for actuator: A B. A+B A+B A+B A+B

B closed A closed

16 l/min = *C3JB = CC4AC = CC4DC = CC6DC

25 l/min = *D3JB = DD4AC = DD4DC = DD6AC = DD6DC

32 l/min = *E3JB = EE4AC = EE4DC = EE6AC = EE6DC40 l/min = *F3JB = FF4AC = FF4DC = FF6AC = FF6DC

50 l/min = *P3JB = PP4AC = PP4DC = PP6AC = PP6DC

63 l/min = *G3JB = GG4AC = GG4DC = GG6AC = GG6DC

80 l/min = *H3JB = HH4AC = HH4DC = HH6AC = HH6DC

100 l/min = *K3JB = KK4AC = KK4DC = KK6AC = KK6DC

125 l/min = *L3JB = LL4AC = LL4DC = LL6DC150 l/min = *M3JB = MM4AC = MM4DC = MM6DC

180 l/min = O*3AA = *O3JB = OO4AC = OO4DC = OO6DC

Manual override by pin / spool-stroke limiter

Manual override = A

Manual override and spool-stroke limiter = C

Cavity prepared = #





25 = D, 32 = E, 40 = F, 63 = H, 80 = I, 100 = K, 125 = L, 140 = M, 160 = N, 175 = O, 190 = P, 210 = Q, 230 = R, 250 = S, 280 = T, 300 = U, 330 = V


3A 3J 4A 4D 6A 6D

Control type

Electrohydraulic, two stage 12 V = F

Electrohydraulic, two stage 24 V = G

Plug type



100-P-000172-E-03/08.2020


7.4.4 Plug type

AMP Junior Timer

-J..-


-T..-

7.4.5 Dimensions

48

24

130 50

230

119

150.5

G3/4”

28 28

65

A B

P�A PB

�

52

119

150.5

28

65

B

Spool types 3J, 6A and 6D

7.4.6 Ordering code


size 12

Spool type with pressure compensator

Control type

Plug type

Port thread for actuator A + B = G¾”

Override pin and spool-stroke limiter

Options

Design stage

for spool type 3A, 4A, 4D = Bfor spool type 3J, 6A, 6D = D

Pressure relief / make-up valve

Actuator A

Cavity prepared = #

Actuator B

Cavity prepared = #

For adjustable

valves:

Pressure setting

PA = ... bar

PB = ... bar



L V S 1 01 2 2 2 0 0 B

100-P-000172-E-03/08.2020


7.5 LVS12 with additional manual handlever



� Port thread actuator A and B = G¾”

� Additional manual handlever

� Spool-stroke limiter


� Flow rate

� Spool function

� Plug type

� Spool stroke-limiter feature (can be factory-setted)

R P LS Y

A

B

ba


Spool type


for actuator: A+B A+B

16 l/min = CC4AC = CC4DC

25 l/min = DD4AC = DD4DC

40 l/min = FF4AC = FF4DC

50 l/min = PP4AC = PP4DC63 l/min = GG4AC = GG4DC

80 l/min = HH4AC = HH4DC

100 l/min = KK4AC = KK4DC

125 l/min = LL4AC = LL4DC

150 l/min = MM4AC = MM4DC

180 l/min = OO4AC = OO4DC

Control type



Plug type



Additional function

Additional manual handlever,

Spool stroke limiter = H

4A 4D

7.5.4 Plug type

AMP Junior Timer

-J..-


-T..-

100-P-000172-E-03/08.2020


7.5.5 Dimensions

44

73

11

9

28 28

87.3 87.3

126 160

16

2

298

19.5

48

G3/4"

A BA B22°

22°

7.5.6 Ordering code


Spool type and pressure compensator

Control type

Plug type


Additional manual operation, override pin, spool-stroke limiter

Options

Design stage



L V S H 1 01 2 2 2 0 0 B

100-P-000172-E-03/08.2020


7.6 LVS12 with additional manual operation, pressure relief / make-up valve

7.6.1 Standard functions

� Port threads G¾”

� Pressure compensator in A +B

� Pressure relief / make-up function (pressure settings are

selectable)

� Additional manual handlever and spool-stroke limiter


� Flow rate


� Plug type

ba

BA


Spool type


for actuator: A+B A+B

16 l/min = CC4AC = CC4DC

25 l/min = DD4AC = DD4DC

40 l/min = FF4AC = FF4DC

50 l/min = PP4AC = PP4DC63 l/min = GG4AC = GG4DC

80 l/min = HH4AC = HH4DC

100 l/min = KK4AC = KK4DC

125 l/min = LL4AC = LL4DC

150 l/min = MM4AC = MM4DC

180 l/min = OO4AC = OO4DC

Control type



Plug type



Pressure relief / make-up function

adjustable 70-230 bar = A

adjustable, 150 - 380 bar = B


25 = D, 32 = E, 40 = F, 63 = H, 80 = I, 100 = K, 125 = L, 140 = M,160 = N, 175 = O, 190 = P, 210 = Q, 230 = R, 250 = S, 280 = T, 300 = U


4A 4D

Additional function

Additional manual handlever,

Spool stroke limiter = H

100-P-000172-E-03/08.2020


7.6.4 Plug type

AMP Junior Timer

-J..-


-T..-

7.6.5 Dimensions44

73

11

9

28 28

87.3 87.3

126 160

16

2

298

19.5

48

G3/4"

A BA B22°

22°

7.6.6 Ordering code

Directional valve

section size 12

Spool type with

pressure compensator function

Control type

Plug type


Additional manual operation, manual override by pin,

spool-stroke limiter

Options

Design stage

Pressure relief / make-up function:

Actuator A

Cavity prepared = #

Actuator B

Cavity prepared = #



For adjustable

valves:

Pressure setting

PA = ... bar

PB = ... bar

L V S H 1 01 2 2 2 0 0 B

100-P-000172-E-03/08.2020


8 End sections



LVS-A-CA*-****A00 100027983 LVS-A-CA*-G1/2A07 100026845

LVS-A-CA*-G110A10 100030024

8.2 Overview of end sections


LVS-A-CA*-****A00 100027983

� No function

R P LSMP LVS-A-CA*-G110A10 100030024

� No function

� Ports: P, R = G1“ LS, MP = G¼“

MR MP MLS LVS-A-CA*-G1/2A07 100026845

� No function

� Test ports; MP, MLS = G¼” MR = G½”

8.3 Dimensions

8.3.1 LVS-A-CA*-****A00 (100027983)

9016

32

133

135

M 10

15

124

8.3.2 LVS-A-CA*-G1/2A07 (100026845)

83,5

M10

20

133

44,7

5

97

65

34,5

90

130

3,5

G1/4

”

G1/2

”

G1/4”

3,5

32

8.3.3 LVS-A-CA*-G110A10 (100030024)

90

M10

15

133

46

99

55,524

135

3,5

156

16

81

66

81

36

G1/4”

G1/4

” G1”

G1”

100-P-000172-E-03/08.2020


9 Configuration of control blocks

9.1 Ordering example

Criteria Ordering code and data Part number

General:Power supply = 24 V DCPlug type = AMP Junior Timer

Inlet section:Pump type = fixed-displacement pumpInlet flow = 140 l/min

Pmax = 230 bar3-way pressure compensator function

LVS-E-CF*-G110A00/P1 = 230 bar

Port threads: A + B = ¾”QIn up to 200 l/min, Δp = 12 bar,LSmax setting = 218 bar (Pmax - Δp)

100030365

1st. Directional valve section:Actuator = 1 motor drive, reversibleInlet flow = 100 l/min

LVS12KK4DCGJ22A1000B

Port threads: P + R = 1“QIn up to 200 l/min, Δp = 12 bar,LSmax setting = 218 bar (Pmax - Δp)

Defined byfactory

2nd. Directional valve section:Actuators: 2 motor drives, non-reversibleQ motor 1 = 100 l/min, Q motor 2 = 40 l/min

Pmax at actuator B = 100 bar

LVS12KK4DCGJ22A1000B-#K Defined byfactory

3rd. Directional valve section:Actuator = double-acting cylinderQ at A and B = 25 l/min

Pmax at A = 100 bar, at B = 160 barON/OFF operation

LVS08DD4A5BJ21A1000C-KN Defined byfactory

End sectionNo control function

LVS-A-CA*-****A00 100027983

Tie rodsScrew-in depth 15 mm, plus 3 directional sections = 3 x 48 mm, plus thickness of end section 32 mm, plus

projection of 15 mm = 206 mm, rounded up to the next 10 mm size = 210 mm

3x tie rods 212 mm

9.2 Assembly kit

To assemble the individual valve sections with assured

functional reliability, 3 tie rods and hex. nuts are necessary.

Maximum tightening torque 30 Nm

Tighten in steps of 6, 16 and 30 Nm.

9.2.1 Ordering code

3x tie rod M10 x ...... (required length in mm)

3x hex. nut M10, Part No.: 100243580

3248

15

48 48

15 Calculating the tie rod length:

15 mm + (48 mm x no. of directional valve sec

tions) + width of the end section + 15 mm

Example:

15 + (48 x 3) + 32 +15 = 206 mm

For ordering purposes, always round up the

calculated tie rod length to the next 10 mm.

In our example, we therefore need to order

3x tie rod M10 x 210 mm.

IMPORTANT: maximum 10 directional sections in one valve block

100-P-000172-E-03/08.2020


9.2.2 Pipe fitting and orifices

Model code Description

Part number: 100116329

- Pipe fitting G¼” with thread for inserting up to 2x M5 orifices(TN3001, Form B)Application note: for fitting in the LS-line to improve system stability

- Orifice : Ø 0.5 = 100219282Ø 0.6 = 100209791Ø 0.8 = 100216052Ø 1.0 = 100225419

10 Fluid

The control blocks require fluid with a minimum cleanliness

level of ISO 4406 code 20/18/15.

We recommend the use of fluids that contains anti-wear ad

ditives for mixed-friction operating conditions. Fluids with

out appropriate additives can reduce the service life ofvalves.

The user is responsible for maintaining and regularly check

ing the fluid quality.

11 Liability

In the design and operation of hydraulic systems, all as

pects of the potential failure modes and all planned operational conditions and uses of the equipment have to take

into consideration.

Concerning risk assessment, please refer to the relevant

Standards. The use of components that are not Original

Bucher Replacement Parts and Accessories nullifies all

warranty.

12 Note

This catalogue is intended for users with specialist knowl

edge. The user must check the suitability of the equipment

described here in order to ensure that all of the conditions

necessary for the safety and proper functioning of the sys

tem are fulfilled. If you have any doubts or questions concerning the use of these pumps, please consult Bucher Hy

draulics.

100-P-000172-E-03/08.2020


� 2020 by Bucher Hydraulics GmbH, D-79771 Klettgau

[email protected]

All rights reserved.

Data is provided for the purpose of product description only, and must not be construed as warranted characteristics in the legal sense. The

information does not relieve users from the duty of conducting their own evaluations and tests. Because the products are subject to continual

improvement, we reserve the right to amend the product specifications contained in this catalogue.

Classification: 430.300.330.

Documents

ProportionalDirectionalValves - Bucher Hydraulics...100-P-000172-E-02/08.2016 LVS08/12directionalvalves–preferredproductsprogramme 6/66 1.5 Generaltechnicaldata Generalcharacteristics